% DuPont Modeling Methodology and Results D ebbie M ulrooney D uPont E ngineering T e c h n o lo g y A pril 2 4 , 2 0 0 2 AR226-2279 Modeling Methodology EPA's Industrial Source Complex 3 (ISC3) Model i Followed procedures In EPA's Guideline on Air Quality Models (Appendix W) BPIP model to evaluate building downwash effects CtisfJ Terrain elevations imported from USGS electronic file Receptor grid with 100-meter spacing 5n-site met data (1996) 2-fi>r J.Y fi't/J - quip W- Modeling Inputs a?.

AR226-2281 4/ 17/02 ISC Modeling Methodology and Results Emission Source Information The ISC3 model was used to calculate ambient ground-level vapor concentrations and deposition rates for year 2000 actual C8 emissions from the Washington Works site.

AR226-2299 EID747569 Current Permit/Application/PDF # 1823A 81SD 815D 1353A Pre-Existing 614A 614A 781 1953 2365A 2365A 2365A FP/D D1 Cooler FP/D 0 3 Cooler FP/D D2 Bypass FP/D D3 Bypass permit ________________________________________ Vent ID Monomer T7IME FPD T6IFCE FPD Gran T6IZCE 164-5E Gran 164-2E FEP FEP 163-E-26 163-E-11 FEP 163-E-33 FEPL3 PFA 242 C1FSE PFA C1FKE PFA C1CAE FPD FPD T6IXE T6IYE FPD T6IEE FPD T6IFE Note: For some vents the surfactant rate is less than the total particulate reported in Air Emissions Inventory which can Include polymer dust.

AR226-2414 -9 s u e ^ H pUjQ. 3/13/8?

------------ -- AR226-2470 1/25/00 DRAFT Responses to GE questions made by Dale VanDeVelde on 1/5/00. 7) C-8 storage and use history Dupont Fluoroproducts began the use o f Ammonium Peifluorooctanoate, C-8, in the early 1950's.

AR226-2485 Walter R Tong 10/08/2001 10:38 AM To: Ta-W ei Fu/SE/DuPont@DuPont cc: Takuya.ichida@daikin.co.jp, Satoshi_komatsu@notes.che.daikin.co.jp, Charles J Noelke/AE/DuPont@DuPont, Steven H Swearingen/AE/DuPont@DuPont, Katsunosuke Kitagawa/PO/DuPont@DuPont, Nancy L Tanzola/AE/DuPont@DuPont, David R Wallace/AE/DuPont@DuPont, Shawn E Messinger/AE/DuPont@DuPont Subject: Re: PROPOSED APFO SPECIFICATIO NS How does this list compare with the FAX th at Daikin sent?

Ohio River Public Water Systems Well Field Results Range in ug/L From Upriver To Downriver w/ Respect To Facility: - Belpre (3 m. up): NQ (<.05) to .107 - Blenls.

AR226-2559 ' 964 08/01 *01 13:01 ID:DUDUP0NTWI1" D-^085-2 302 774 6474 PAGE 2 ,. 91 07/30/01 14:03 0 :0 2 /0 6 O ;, (S > uwtkd r TM prdtecton A0BKy i'fifluitipiUs, Pwmiytva^* l a t te o K t\Jif#I11 BgfURW H tf if iin PffOCTaTgft &fo PwlIoMtttl M*nl Manag 4. diiPoni 4t>Nemciuru& Co, he aitt M2 Sautli dupontD6i| Petersburg.

DuPont Engineering July 22,2002 AR226-2609 DuPontE n fitiwing Borloy M l PIb s - Bldg. 27 Lancaster Pik & Rts.

recycled N> CO AR226-2640 AR226-2640 Shimizu Works Groundwater Sampling Results Aug. 5-7, 2002 Scope of Work Summary Sampling Points - 8 operating pumping wells (other shallow wells at site were dry) - site WWTP effluent going to public trench (Well 9) - surface water trench outside site along access road (Well 10) Analytical Program - FC-143 (by Eygen Labs) - Priority Pollutant VOCs/SVOCs/Metals WELL 10 ( M SHIMIZU WORKS LAYOUT WEWLLaste5 P 1.7) South Gate [j (697) West Gate 20m depth WELL 1(1200) 10m depth 4m depth SHIMIZU WORKS GROUNDWATER SAMPLING-AUG. 5-7,2002 ANALYTICAL RESULTS SUMMARY (IN UG/L) ----- ------- ------------ - S a m p le lD I ... ....

AR226-2661 RECYCLED Exygen RESEARCH I : Precise Research.

RECYCLED 03 AR226-2681 3M Environmental Laboratory AR226-2681 Results from Analyses of Soil and Groundwater Samples From the E.

Larry R.

Lancaster Laboratories 2425 New Holland Pike Lancas'ter.

f Division of Biology and Safety Evaluation PROJECT NO. 81-2571 EMBRYOFETAL TOXICITY AND TERATOGENICITY STUDY 0F| [BY INHALATION IN THE RAT Final Report Submitted to: E.